Free plan: Glenny & Henderson Gadfly by Sherman Gillispie

Here's another one. Its the Glenny and Henderson "Gadfly", an entrant in the well known British Limpne Trials for ultra-light airplanes in the early and mid 1920s (http://en.wikipedia.org/wiki/Lympne_...ircraft_trials). This one was designed by Sherman Gillispie and was a plan in the April 1955 Model Airplane News. Anything Sherman Gillispie designs will fly fantastically well and this is one of his best. I have built four models from this plan over the years beginning with my April 1955 issue of MAN when I was fifteen. Its the BEST flying scale rubber model I have ever built! If you can't get this one to fly great you should give up and find something like collecting stamps for a hobby.

Yup, that's the way all of my Gadflys flew! The Gadfly will glide very well, a lot better than the one in the video. All rubber powered models should first be trimmed to glide with NO POWER. Once you get the best glide (close to a stall but no stall), THEN you make all adjustments using power with variations in thrust adjustment.